| 释义 |
pH
[ˌpi:'eɪtʃ] noun countable usually singular
■a number which shows how strongly acid or alkaline a substance is, in a range from 0 to 14 酸碱度，pH 值•Below pH 6.5 is acid, above pH 7.5 is alkaline.pH值低于6.5为酸性，高于7.5为碱性。 •The soil in our garden has a low/high pH.我们花园里的土壤pH值低／高。 |